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
51 + 10 = ______
47 + 20 = ______
7 × 10 = ______
52 − 10 = ______
57 + 10 = ______
12 + 20 = ______
4 × 10 = ______
29 − 10 = ______
8 × 10 = ______
3 × 10 = ______
40 + 10 = ______
24 + 20 = ______
9 × 10 = ______
61 − 10 = ______
56 − 10 = ______
33 − 10 = ______
52 + 10 = ______
6 × 10 = ______
51 + 20 = ______
46 + 10 = ______
