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
9 × 10 = ______
34 − 10 = ______
7 × 10 = ______
2 × 10 = ______
73 − 10 = ______
5 × 10 = ______
76 − 10 = ______
20 + 20 = ______
12 + 10 = ______
56 + 10 = ______
76 + 10 = ______
35 − 10 = ______
41 + 20 = ______
79 + 10 = ______
51 − 10 = ______
15 + 10 = ______
30 + 10 = ______
53 + 10 = ______
81 − 10 = ______
29 + 20 = ______
