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
21 + 20 = ______
7 × 10 = ______
4 × 10 = ______
57 − 10 = ______
1 × 10 = ______
42 − 10 = ______
95 − 10 = ______
43 + 20 = ______
13 + 10 = ______
29 + 10 = ______
38 − 10 = ______
34 + 10 = ______
2 × 10 = ______
96 − 10 = ______
39 + 10 = ______
70 − 10 = ______
9 × 10 = ______
33 + 10 = ______
8 × 10 = ______
51 + 20 = ______
