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
64 + 20 = ______
4 × 10 = ______
8 × 10 = ______
24 − 10 = ______
54 + 10 = ______
58 − 10 = ______
57 + 20 = ______
1 × 10 = ______
65 + 20 = ______
3 × 10 = ______
43 − 10 = ______
6 × 10 = ______
7 × 10 = ______
55 − 10 = ______
85 + 10 = ______
47 − 10 = ______
78 − 10 = ______
12 + 10 = ______
67 + 20 = ______
57 + 10 = ______
