Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
3 × 10 = ______
93 − 10 = ______
24 − 10 = ______
56 + 20 = ______
5 × 10 = ______
23 + 20 = ______
63 + 10 = ______
41 − 10 = ______
42 − 10 = ______
33 + 20 = ______
32 + 20 = ______
2 × 10 = ______
27 + 20 = ______
81 + 20 = ______
66 + 20 = ______
49 + 20 = ______
79 + 20 = ______
78 − 10 = ______
38 + 20 = ______
8 × 10 = ______
