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
88 + 10 = ______
1 × 10 = ______
66 + 20 = ______
9 × 10 = ______
8 × 10 = ______
81 + 20 = ______
69 − 10 = ______
2 × 10 = ______
86 − 10 = ______
87 + 20 = ______
80 + 20 = ______
3 × 10 = ______
24 − 10 = ______
4 × 10 = ______
99 − 10 = ______
5 × 10 = ______
15 + 20 = ______
43 − 10 = ______
21 + 10 = ______
19 + 20 = ______
