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 = ______
36 − 10 = ______
46 + 10 = ______
6 × 10 = ______
47 − 10 = ______
32 − 10 = ______
39 − 10 = ______
57 + 20 = ______
40 + 20 = ______
2 × 10 = ______
27 + 20 = ______
3 × 10 = ______
85 + 20 = ______
41 − 10 = ______
25 − 10 = ______
34 + 10 = ______
44 + 20 = ______
51 − 10 = ______
5 × 10 = ______
68 + 10 = ______
