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
1 × 10 = ______
14 + 10 = ______
21 − 10 = ______
22 − 10 = ______
3 × 10 = ______
4 × 10 = ______
35 − 10 = ______
24 − 10 = ______
39 − 10 = ______
53 + 20 = ______
86 + 20 = ______
73 + 20 = ______
5 × 10 = ______
70 + 10 = ______
32 + 10 = ______
65 − 10 = ______
89 − 10 = ______
33 + 10 = ______
12 + 10 = ______
42 − 10 = ______
