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
70 − 10 = ______
24 + 20 = ______
5 × 10 = ______
19 + 20 = ______
81 + 20 = ______
38 + 10 = ______
40 − 10 = ______
66 + 10 = ______
6 × 10 = ______
39 − 10 = ______
9 × 10 = ______
49 + 10 = ______
94 − 10 = ______
12 + 10 = ______
43 − 10 = ______
77 − 10 = ______
89 + 10 = ______
85 − 10 = ______
78 + 10 = ______
70 + 10 = ______
