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
73 − 10 = ______
20 + 10 = ______
74 + 20 = ______
7 × 10 = ______
40 + 10 = ______
12 + 20 = ______
57 + 20 = ______
23 + 20 = ______
72 − 10 = ______
9 × 10 = ______
56 + 10 = ______
64 + 10 = ______
95 − 10 = ______
2 × 10 = ______
8 × 10 = ______
58 − 10 = ______
20 + 20 = ______
13 + 20 = ______
81 − 10 = ______
72 + 20 = ______
