diff --git a/tests/nightly/test_large_vector.py b/tests/nightly/test_large_vector.py
index 7ea27c221abf..3580bbd5ad48 100644
--- a/tests/nightly/test_large_vector.py
+++ b/tests/nightly/test_large_vector.py
@@ -56,17 +56,6 @@ def test_ndarray_ones():
     assert nd.sum(a).asnumpy() == LARGE_X
 
 
-@unittest.skip("need to fix")
-def test_ndarray_convert():
-    a = nd.zeros(shape=(LARGE_X, SMALL_Y))
-    b = a.astype(np.int32)
-    b.wait_to_read()
-    assert b.dtype == np.int32
-    b = a.tostype('row_sparse')
-    b.wait_to_read()
-    assert isinstance(b, mx.nd.sparse.RowSparseNDArray)
-
-
 @with_seed()
 def test_ndarray_random_uniform():
     a = nd.random.uniform(shape=LARGE_X)
@@ -107,14 +96,6 @@ def test_reduce():
     assert nd.sum(a).asnumpy() == a.shape[0] * a.shape[1]
 
 
-@unittest.skip("need to fix")
-def test_dot():
-    a = nd.ones(shape=(LARGE_X, SMALL_Y))
-    b = nd.ones(shape=(SMALL_Y, SMALL_Y))
-    res = nd.dot(a, b)
-    assert np.sum(res[-1].asnumpy() == SMALL_Y) == b.shape[1]
-
-
 def test_FullyConnected():
     a = nd.ones(shape=(LARGE_X, SMALL_Y))
     b = nd.ones(shape=(SMALL_Y, SMALL_Y))
@@ -200,17 +181,6 @@ def test_Dense(ctx=mx.cpu(0)):
     assert res.shape == (LARGE_X, 2)
 
 
-@unittest.skip("need to fix")
-def test_where():
-    a = nd.ones(shape=(LARGE_X, SMALL_Y))
-    b = nd.arange(0, LARGE_X * SMALL_Y).reshape(LARGE_X, SMALL_Y)
-    res = nd.where(b > 100, a, b)
-    assert np.sum(res[-1].asnumpy() == 1) == b.shape[1]
-    csr_cond = nd.sparse.cast_storage(b < 10, 'csr')
-    res = nd.sparse.where(csr_cond, a, b)
-    assert np.sum(res[0].asnumpy() == 1) == 10
-
-
 def test_pick():
     a = mx.nd.ones(shape=(LARGE_X, 2))
     b = mx.nd.ones(shape=LARGE_X)