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
42 + 10 = ______
80 − 10 = ______
3 × 10 = ______
87 − 10 = ______
67 + 20 = ______
2 × 10 = ______
7 × 10 = ______
33 + 20 = ______
51 + 10 = ______
51 − 10 = ______
72 + 10 = ______
8 × 10 = ______
18 + 10 = ______
19 + 20 = ______
47 + 10 = ______
32 − 10 = ______
41 + 20 = ______
9 × 10 = ______
4 × 10 = ______
21 − 10 = ______
